Automatic brake



Dec. 5, 1933. E, DELANQ 1,937,686

AUTOMATIC BRAKE Filed NOV. 19, 1930 in its use as a connection between the truck and is illustrated in Figure 3 diagrammatically, and

Patented Dec. 5,'1933 Y i i i UNITED STATES PATENT OFFICE Eduardo Delano, Santiago,Chile Application November 19, 1930 Serial No. 496,714

3 Claims. (Cl. 188-142) This invention is directed to an automatic con- F is formed with an offset which engages the trol wherein two connected or coupled elements cross bar of the U-shaped element B at the rear may be relatively governed to a useful end as, for side of said bar relative to the truck or other `example, where a connected truck and trailer are element on which the connection is mounted.

5` given relative movement incident to braking ac- The upper end of the lever A is connected by a 69? tion of the truck. The installation of the imrod L to an auxiliary lever L mounted on the proved controlling means serves to automatically frame, with the latter connected to a brake opbrake the truck. erating arm for controlling the brakes of two The invention comprehends an element which or more wheels of the trailer. This connection 5. trailer may serve to permit allnecessary relative Vas it forms no essential part of the present demovements of the truck and trailer incident to vice, no further description thereof is deemed the traveling of the vehicles, with the parts alnecessary.

ways in position to utilize undue movement of In the normal movements of the trllok, the

115' one Ofthe vehicles te transfer a Corresponding lever A serves as the coupling for the trailer, asV 70;

movement to the other of such vehicles. Suoh leVeI Cannot move rearwardly beyond a 'Ihe invention is illustrated in the accompany- Veltlcal position owing to the bearing Conneoing drawing, in which:- tion between the lower end of the lever and the A Figure 1` is e side view 0f the device showing 'Ll-shaped element B. In the independent turnthe same applied t0 a, basesuch, for example, as lng movements Of the trailer relative t0 the en elite i-,ruek frame truck, such turning movements are communi- Figure 2 is atransverse sectional view, partly Gated to the lever A and by the lever A to the in eievatien, 0f the seme element B, permitting the free turning of the `Figure 3 is a, more 01` less diagrammatic View trailer', aS Will be ObVlOllS. In the EVellt the 2 `between a, truck endtrei1eil Y bybraking or other means, the inertia of the The device in the use with which it is to be trailer SWihgS the upper end of the lever A `formere Speeifieeiiy described includes a lever A wardlyincident to the connection between the A piveteiiy' Connected on e pin F supported in free forward portion of the trailer and the lever,

A terminals ef the arms ef e u sheped member B with the result that the rod `L is drawn upon 85,

connected by a pintor bolt C tothe rear of the and the level. L Operated and the brakes aD- truck or other vehicle to permit freeV turning plied to the trailer.`

movement of the lever as a whole incident to While Showing and desorbing the invention the similar relative movement of the trailer HQ aS applied to a Conneoting means between the Mounted on each Side 0f the element B are intlllCk and tI'all1',` lt iS, Of COlllSe, ObVlOllS that QO-l Vex-ted U-Shapedsupports E bolted t0 the truck the invention is broader than SllCll application frame and forming a guiding support for the and that the invention is directed to an autoforward end of the appropriate part of the trailer. metio `Ilfleohhisrn actuated by the Weight of e By this arrangement, the trailer is permitted a movable mass during moment of inete to Con limited free movement toward and from the trol that mass in its relation to another mass 9,5

45 the supports is maintained by a coiled spring K herein and i such other uses and purposes yare truck, the lever A passing loosely through an with which it may be coupled or connected. opening M in the trailer element resting upon With this understanding of the invention, it is the supports E. The normal relation between quite obvious that it is applicable for many the trailer element lying on the support and other purposes than that specincally described 00 seated in a recess in the upper end of the trailer contemplated as a part of this invention, element and engaging beneath a plate J held in I claim:- e position to maintain the spring compressed by `1. A coupling between a leading vehicle and a a pin I passing through an opening in the `lever following vehicle including a U -shaped member A. The spring K maintains the two parts of the mounted for free turning movement on the leadcoupling in resilient union so that when traveling ing vehicle, a lever mounted for swinging move- Vover uneven roads the trailer may nullify the ver ment on the member, a connection between the tical movements caused by vibration or shock lever and following vehicle, means for limiting ,i and also those arising in the direction of traction. swinging of the lever in one direction Without The lower end of the lever A below the pivot pin interfering with free swinging in the opposite showing the device in use asforming the coupling forward motion of the truck is interrupted, as 80,. i

swing the lever in the permissible direction, andv means controlled by the lever for actuatingvthe brakes on the following vehicle in such' swinging movement.

3. A coupling between a leading vehicle and a following vehicle including a lever mounted on the leading vehicle and supported for rotative movement with respect to the leading vehicle, said lever being also mounted for swinging movement in one direction about an axis perpendicular to the axis about which the lever rotates, means for connecting the lever to the following vehicle to compel vertical movement of the le- Ver in the permissible direction under inertia of the following vehicle, and brake controlling elements connected to and operated by said lever.

- EDUARDO DLANO. 

